I doubt that many people will go online on the 1st day. I think a lot will atleast try to race all of the level's 1st. So, I don't see any server crashes coming. But I could see that if they sell to many Wii U's that the servers for the eshop will crash with all the people at once trying to update there systems. That's of course depends on how much day one updates people need to do. They should have had the one back from launch on systems by now, but who knows about the rest. It could also stress the eshop if there is a lot of people trying to download there free game, a long with all the day one updates every game has. I worry more about the servers that do updates and eshop rather than the MK8 servers.